BMI Calculator Online — Body Mass Index Free
Calculate your BMI and discover your ideal healthy weight range according to WHO guidelines.
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How to Use This Tool
STEP 01
Choose Unit System
Select Metric (cm/kg) or Imperial (feet/inches/lbs).
STEP 02
Enter Height & Weight
Type your height and current body weight.
STEP 03
Review Results
See your exact BMI score, weight classification, and healthy target range.
Key Features & Privacy Guarantee
- Dual unit systems: Metric (centimeters / kilograms) and Imperial (feet / inches / pounds)
- Clear WHO classification: Underweight, Normal weight, Overweight, Obese
- Computes healthy target weight range for your specific height
- 100% private: health metrics are never tracked or saved to servers
Frequently Asked Questions
What is a normal healthy BMI?
According to the World Health Organization (WHO), a normal BMI for adults falls between 18.5 and 24.9.
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